Birds sing using the syrinx, the avian vocal organ. Singing is usually confined to males and is at its height during the breeding season, when it is used to attract a mate. Birdsongs are usually more complex and longer than birdcalls. There is evidence that songs are learned, while certain calls are inherited. A male chaffinch hatchling, for example, sings a “subsong” but only learns the true song by hearing and imitating adult males. Deaf birds sing, but their songs are different in what way? Discuss
Source: The Free Dictionary